1 //===- MBlazeRegisterInfo.h - MBlaze Register Information Impl --*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains the MBlaze implementation of the TargetRegisterInfo
11 // class.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef MBLAZEREGISTERINFO_H
16 #define MBLAZEREGISTERINFO_H
17 
18 #include "MBlaze.h"
19 #include "llvm/Target/TargetRegisterInfo.h"
20 
21 #define GET_REGINFO_HEADER
22 #include "MBlazeGenRegisterInfo.inc"
23 
24 namespace llvm {
25 class MBlazeSubtarget;
26 class TargetInstrInfo;
27 class Type;
28 
29 namespace MBlaze {
30   /// SubregIndex - The index of various sized subregister classes. Note that
31   /// these indices must be kept in sync with the class indices in the
32   /// MBlazeRegisterInfo.td file.
33   enum SubregIndex {
34     SUBREG_FPEVEN = 1, SUBREG_FPODD = 2
35   };
36 }
37 
38 struct MBlazeRegisterInfo : public MBlazeGenRegisterInfo {
39   const MBlazeSubtarget &Subtarget;
40   const TargetInstrInfo &TII;
41 
42   MBlazeRegisterInfo(const MBlazeSubtarget &Subtarget,
43                      const TargetInstrInfo &tii);
44 
45   /// Get PIC indirect call register
46   static unsigned getPICCallReg();
47 
48   /// Code Generation virtual methods...
49   const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
50 
51   BitVector getReservedRegs(const MachineFunction &MF) const;
52 
53   void eliminateCallFramePseudoInstr(MachineFunction &MF,
54                                      MachineBasicBlock &MBB,
55                                      MachineBasicBlock::iterator I) const;
56 
57   /// Stack Frame Processing Methods
58   void eliminateFrameIndex(MachineBasicBlock::iterator II,
59                            int SPAdj, RegScavenger *RS = NULL) const;
60 
61   void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
62 
63   /// Debug information queries.
64   unsigned getFrameRegister(const MachineFunction &MF) const;
65 
66   /// Exception handling queries.
67   unsigned getEHExceptionRegister() const;
68   unsigned getEHHandlerRegister() const;
69 };
70 
71 } // end namespace llvm
72 
73 #endif
74